The amount you spend on tools is relative to the amount of time you will be using the tool "X", divided by the 'How bad I need it factor' "B", multiplied by the "fuck it" factor,"F".
Just for the example let's say X is 2 days per week, and we'll give B a neutral value of 1, and fuck it will have a neutral value of 1.
2 / 1 x 1 = 2
You take that value and apply it to my handy what should I spend on tools chart.
1. Spend less where it doesn't matter. Wrenches, screwdrivers, hammers, etc. Harbor freight, Powerbuilt, Stanley, etc. Pick up nicer stuff where you can on the cheap.
2. Step up to department store tool sets (Craftyman, husky) Amazon is also a good resource to put together a nicer toolkit if you don't mind shopping for each part. Spend more on nice electric tools. Bosch, dewalt, Milwaukee, etc.
3. High end hand tools, Snapoff , Matco, etc. "I'm a fucking baller and I need that vibrating torque wrench to show it."
IMO if you don't have any tools the big 300 piece craftsman sets are a good start for the buck. Sears regularly has them on sale and they're all over ebay.
Craftsman 309 piece Mechanics tool set $169